Question

In triangle ABC BC=50° find A

Answer 1

Answer:

Angle A B C = 180 degree

angle AB and AC = 180 - BC

angle AB and AC = 180 - 50

angle AB and AC = 130 degree

angle AB and AC = 2x

2x = 130

x = 130/2

x = 65 degree

angle A and C = 65 degree